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Q&A Is this atmospheric composition breathable, and what would it look like?

I have developed a fictional planet with the following atmospheric composition; 60.4% Nitrogen 27.6% Oxygen 9.8% Xenon 1.5% Water Vapor 0.64% Argon 0.06% Carbon Dioxide Is this breathable to hu...

5 answers  ·  posted 7y ago by Dark Martin‭  ·  last activity 6y ago by Dark Martin‭

Question space atmosphere planets colonization space-colonization habitability